 |
| |||
| semi-major axis | |||
|
半长径 : 23 phrases in 11 subjects |
| Automobiles | 2 |
| Aviation | 1 |
| Bridge construction | 1 |
| Drilling | 2 |
| General | 1 |
| Metallurgy | 1 |
| Navigation | 1 |
| Oil / petroleum | 3 |
| Polymers | 1 |
| Space | 1 |
| Technology | 9 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips